PN: B15KH-AA (Nkk switches of america inc) PN: B15KH-AA-RO (Nkk switches of america inc) PN: B15KH-BA (Nkk switches of america inc) PN: B15KH-BA-RO (Nkk switches of america inc) PN: B15KV-BA (Nkk switches of america inc) PN: B15KV-BA-RO (Nkk switches of america inc)